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Samenvatting Blok1.1: HC1 Biomoleculen

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Biomoleculen en metabolisme

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HC Biomedische wetenschappen
17/09/2024
1. Biomoleculen
Lichaam = biomedisch fabriek
 Voedingsstoffen aanvoeren, afvalstoffen afvoeren
Biomoleculen (samenstelling)
- Monomeren
- Dimeren
- Oligomeren
- Polymeren
Soorten biomoleculen (als bouwstof of brandstof)
- Koolhydraten (suikers)
o Trage suikers: brood, pasta, aardappelen (polymeren/lange ketens)
=> langer verteringsproces
o Snelle suikers: fruit, suiker (monomeren/korte ketens)
korter verteringsproces

o Monosacchariden = glucose
o Disacchariden = glucose + fructose
o Oligosacchariden = sucrose
o Polysacchariden = zetmeel

o Glucose (C6H12O6)
o Zetmeel (plantaardig)  glycogeen (dierlijk)(opslaan in bepaalde mate,
daarna als vet)

, HC Biomedische wetenschappen
17/09/2024


- Lipiden (vetten) => hydrofoob (waterafstotend)
o Triglyceriden (boter, kaas, oliën)
 Glycerol + 3 vetzuurstaarten (C en H)

 Minder zuurstof (minder waterstofbruggen)
 Gesatureerd/verzadigd (rechte visgraat)  ongesatureerd/onverzadigd
(kromming)
=> vast (boter) = ongezonder => vloeibaar (oliën) =
gezonder




o Steroïden
=> cholesterol als basisstof voor cortisone, vitamine D en testosteron
o Fosfolipiden
 Glycerol + 2 vetzuurstaarten + fosfaatgroep + non-lipidegroep
=> hydrofobe staarten => hydrofiele koppen
Vormen een dubbellaag met staarten naar binnen en koppen naar
buiten
 Basis van membraan
- Proteïnen (eiwitten)
 Eieren, vlees noten, peulvruchten
o Aminozuren (monomeer)

=> Aminogroep (stikstofhoudend) =>
carbonzuurgroep
Aminozuur blijft altijd hetzelfde, alleen de
restgroep verschilt
(21 verschillende soorten)




o Dipeptiden
o Oligopeptiden
o Polypeptiden

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June 26, 2025
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